Card Guides and Polarizing Keys
- Card Edge Connectors
- Pressfit Card Edge Connectors
- Metal to Metal Card Edge Connectors
- High Temp Card Edge Connectors
- High Speed Card Edge Connectors
- Card Guides and Polarizing Keys
- Contact Termination Options
- Card Edge Connector Housings
Categories
- Card Edge Connectors
- RECTANGULAR CONNECTORS
- D-Sub Connectors
- Machined D-Sub Connectors
- Power Combo D-Sub Connectors
- Parallel Port D-Sub Connectors
- Waterproof D-Sub Connectors
- DB9 Connector
- DB15 Connector
- DB25 Connector
- Vertical PCB D-Sub Connector
- D-Sub Panel Cut-outs
- Cable Wire D-Sub Connector
- PCB D-Sub Connector
- Right-angle PCB D-Sub Connector
- Backshells or Hoods, and Caps for D-Sub Connectors
- D-Sub Connector Housings
- D-Sub Connector Contacts
- Modular & Magnetic Jacks
- USB Connectors
- HDMI Connectors
- INLINE CONNECTORS
- HEADER CONNECTORS
- Waterproof Connectors
- Cable Assemblies
- Custom Connectors
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Edge Connector Card Guides and Polarizing Keys
What is a card edge connector card guide?
The card guides are attached to the card edge connector to help ensure proper alignment when inserting the mother or daughter card into the connector slot.
Card guide engineering options
In-line or offset card guide
options are available. Card guides can be purchased factory installed or can be
purchased separately and assembled in the field.
What is polarizing key?
A polarizing key is a feature that can be added to a card edge connector so that only the proper PC board can be inserted into the connector. The key acts as a stop and prevents improper boards from being inserted into the connector. Only boards with a cut out matching the location of the polarizing key in the connector can be inserted into the connector. The key also prevents a PC board from being inserted incorrectly/backwards into the connector.
Polarizing key engineering options
There are four basic keying options, in-contact, between contact, molded in-contact, molded between contact. In-contact keys are installed or molded over a pair of contacts in the connector. The more common between contact key is installed or molded between two pairs of contacts, therefore not eliminating a pair of contacts for use with the PC board.
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